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Atomic Mass increases in size as the atomic number increases. For example, hydrogen weighs about 1.01 grams per mole and it has periodic #1. Helium is atomic #2 and it has an atomic mass of 4.00 g/mol. This trend continues all the way to the last known pure element.
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What periodic trends did did Mendeleev organize his periodic table by?
Atomic Mass Octaves and Triads
How were the elements in the periodic table arranged?
By Atomic Mass
The atomic mass listed in the periodic table is the?
Average atomic mass
What periodic trends did Mendeleev organize his periodic table by Atomic number Atomic mass Octaves Triads First ionization energy?
In 1869, Mendeleev organized his periodic table by increasing atomic mass (atomic weight), using what is called the "law of octaves," by which every 8th element in the sequence shared similar properties. This was first observed by John Newlands in his element table around 1863.
How are atomic mass on the periodic table calculated?
Atomic mass is determined by mass spectrometry.
What trends were seen in Mendeleev's periodic table?
he arranged his Periodic Table by each elements Atomic Mass
What periodic trends did did Mendeleev organize his periodic table by?
Atomic Mass Octaves and Triads
What periodic trends did Mendeleev organize his periodic table by?
atomic mass, triads, and octaves
Why is the periodic table useful for studying the properties of different elements?
well, the periodic table is very useful because you have the atomic number, atomic mass, and even the trends across a period or down a group.
How were the elements in the periodic table arranged?
By Atomic Mass
What trends do you notice about the atomic number and atomic mass as you move left to right across the periodic table?
The atomic number increases from left to right. The atomic number also increases.However, there are few exceptions for atomic mass.
The atomic mass listed in the periodic table is the?
Average atomic mass
In what order did Mendeleev arrange the elements in the first periodic table?
Mendeleev arranged the elements in the periodic table according to their atomic masses.
What periodic trends did Mendeleev organize his periodic table by Atomic number Atomic mass Octaves Triads First ionization energy?
In 1869, Mendeleev organized his periodic table by increasing atomic mass (atomic weight), using what is called the "law of octaves," by which every 8th element in the sequence shared similar properties. This was first observed by John Newlands in his element table around 1863.
Why is hydrogen on the top of modern periodic table?
The periodic table is arranged by atomic mass. Hydrogen is the lightest element. Its atomic mass is one.
How are atomic mass on the periodic table calculated?
Atomic mass is determined by mass spectrometry.
How do you find the atomic mass and the atomic number?
The atomic number is the whole # on the periodic table or the # of protons in an atom. The atomic mass is the # that is not the whole # on the periodic table, or you can multiply the mass of the isotope by its abundance and add the answers together.
